Ronald, the problem is that you don't see if the right stamp was used until after you have registered it. And when you change the rating afterwards it doesn't show....
Danubius, I just noticed that Marina also used the wrong stamps, the latest arrived today: RU-289.
RU-241 is incorrect as well. Since not everybody posts pictures of the stamps it's difficult to tell if there are more.
I received a different stamp myself today (RU-255) but since it is the 2020 stamp I don't mind.
However, it seems to really turn into a problem that members don't play by the rules :-((